[src/trunk]: src/sys/netipsec Destroy sav only in the loop for DEAD sav

[ozaki-r <ozaki-r%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/dfa2df2f7bed
branches:  trunk
changeset: 825957:dfa2df2f7bed
user:      ozaki-r <ozaki-r%NetBSD.org@localhost>
date:      Tue Aug 08 08:24:34 2017 +0000

description:
Destroy sav only in the loop for DEAD sav

diffstat:

 sys/netipsec/key.c |  26 ++++++--------------------
 1 files changed, 6 insertions(+), 20 deletions(-)

diffs (74 lines):

diff -r 6e2ca21b26bb -r dfa2df2f7bed sys/netipsec/key.c
--- a/sys/netipsec/key.c        Tue Aug 08 08:23:10 2017 +0000
+++ b/sys/netipsec/key.c        Tue Aug 08 08:24:34 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: key.c,v 1.217 2017/08/08 08:23:10 ozaki-r Exp $        */
+/*     $NetBSD: key.c,v 1.218 2017/08/08 08:24:34 ozaki-r Exp $        */
 /*     $FreeBSD: src/sys/netipsec/key.c,v 1.3.2.3 2004/02/14 22:23:23 bms Exp $        */
 /*     $KAME: key.c,v 1.191 2001/06/27 10:46:49 sakane Exp $   */
 
@@ -32,7 +32,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: key.c,v 1.217 2017/08/08 08:23:10 ozaki-r Exp $");
+__KERNEL_RCSID(0, "$NetBSD: key.c,v 1.218 2017/08/08 08:24:34 ozaki-r Exp $");
 
 /*
  * This code is referd to RFC 2367
@@ -4719,7 +4719,7 @@
        restart_sav_LARVAL:
                SAVLIST_READER_FOREACH(sav, sah, SADB_SASTATE_LARVAL) {
                        if (now - sav->created > key_larval_lifetime) {
-                               KEY_FREESAV(&sav);
+                               key_sa_chgstate(sav, SADB_SASTATE_DEAD);
                                goto restart_sav_LARVAL;
                        }
                }
@@ -4746,7 +4746,6 @@
                                 */
                                if (sav->lft_c->sadb_lifetime_usetime == 0) {
                                        key_sa_chgstate(sav, SADB_SASTATE_DEAD);
-                                       KEY_FREESAV(&sav);
                                } else {
                                        key_sa_chgstate(sav, SADB_SASTATE_DYING);
                                        /*
@@ -4792,7 +4791,6 @@
                        if (sav->lft_h->sadb_lifetime_addtime != 0 &&
                            now - sav->created > sav->lft_h->sadb_lifetime_addtime) {
                                key_sa_chgstate(sav, SADB_SASTATE_DEAD);
-                               KEY_FREESAV(&sav);
                                goto restart_sav_DYING;
                        }
 #if 0  /* XXX Should we keep to send expire message until HARD lifetime ? */
@@ -4816,27 +4814,15 @@
                                 sav->lft_h->sadb_lifetime_bytes <
                                 sav->lft_c->sadb_lifetime_bytes) {
                                key_sa_chgstate(sav, SADB_SASTATE_DEAD);
-                               KEY_FREESAV(&sav);
                                goto restart_sav_DYING;
                        }
                }
 
                /* delete entry in DEAD */
+       restart_sav_DEAD:
                SAVLIST_READER_FOREACH(sav, sah, SADB_SASTATE_DEAD) {
-                       /* sanity check */
-                       if (sav->state != SADB_SASTATE_DEAD) {
-                               IPSECLOG(LOG_DEBUG,
-                                   "invalid sav->state (queue: %d SA: %d): "
-                                   "kill it anyway\n",
-                                   SADB_SASTATE_DEAD, sav->state);
-                       }
-
-                       /*
-                        * do not call key_freesav() here.
-                        * sav should already be freed, and sav->refcnt
-                        * shows other references to sav
-                        * (such as from SPD).
-                        */
+                       KEY_FREESAV(&sav);
+                       goto restart_sav_DEAD;
                }
 
                s = pserialize_read_enter();